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Editorial Team
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Asked: 2026-05-29T07:35:13+00:00

I usually write my classes in C++ and check if they leak memory using

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I usually write my classes in C++ and check if they leak memory using valgrind on Linux platform. I’m not satisfied until all the heap memory is freed.

Starting to write in Qt, I found how many leaks valgrind detects, also on a simple project. They are so many that it’s difficult to detect my same leaks.

I read somewhere that is possibile to use a suppression files for valgrind which helps filtering out the unwanted leaks, but I can’t find it.

I’m using Ubuntu 11.04 x64, g++ 4.5, Qt 4.7.
Does somebody know how to cope with this problem?

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1 Answer

  1. Editorial Team

    Did you look at this “Valgrind Suppression File Howto” wiki?

    Just for the record there are some underlying libraries in Qt (especially the ones in the painting process) which always leak small amount of memory. These are the one you need to suppress.

    As you said, you should first create a minimal project, run it to create a valgrind suppression file and then apply that suppression file to your project.

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